Xi'an Yonghua Group Co., Ltd. - Jiajiatan, Caotan, Xi'an, Shaanxi 710021, P.R. China Tel. +86 (29) 6499139, 6499400, Fax +86 (29) 6499252, 6499139 products: mechanical seals - Xi'an Yonghua Group Co., Ltd. is specialized in welded metal bellows seals, pusher seals and high performance seals. Bellows Design Advantages: Xi'an Yonghua's bellows seals have no sliding secondary seals. This eliminates the problem of swale face "hang up. "the major cause of seal failure with spring-loaded seals. Effective contact of sealing faces is maintained, and leakage to the atmosphere is minimized. By using a static secondary seal, managing shaft or sleeve fretting and subsequent premature seal failure are avoided. Unlike springs, bellows are nonclogging and their durable design can withstand higher viscosity fluids and a higher concentration of solids. API-682 Qualified: The low-Temperature series seals meet and exceed the testing requirements as defined by API-682 specifications. company profile: ISO 9001 certified SHAANXI SINWA INT'L TRADING CO., LTD. - 5/F, No.103, North Chang An Road, Xi'an, 710061, China Tel. +86-29-87787068, Fax +86-29-85391890 products: Sputtering Targets Semi-finished Products: molybdenum, tungsten, tantalum, niobium and their alloys in the form of semi-finished products such as sheets, bars, wires, tubes, and finished products for many kinds of industrial applications. Finished Products: Vacuum Coating and Semiconductor Equipment Components, Refractory Metal Fasteners, Welded and Riveted Boat, Sintered Crucible, Furnace Liner, Radiation Shield and Components, Molybdenum Electrode, Tungsten & Alloys Electrode company profile: Shaanxi Sinwa Int'l Trading Co., Ltd. specializes in producing and exporting refractory metal products. We are equipped with complete production line, ranging from powder producing to machining, with two decades of expertise and stringent testing procedures, which enable us to supply our customer with variety of refractory metal products with on-time delivery, high-performance quality and competitive price. Site Map www.vacuum-guide.com |